[PATCH]: Separate target and host config files

[Richard Earnshaw]

> 2005-05-06  Nathan Sidwell  <nathan@codesourcery.com>
>	    Paolo Bonzini  <bonzini@gnu.org>
>
>	* Makefile.in (cs-tconfig.h): Pass USED_FOR_TARGET to mkconfig.sh
>	* configure.ac (enable_checking): Fix typos in runtime_checking.
>	(ENABLE_RUNTIME_CHECKING): Mark as target template.
>	(xm_file): Prepend auto-host.h
>	(HAVE_GAS_HIDDEN, HAVE_LD_EH_FRAME_HDR): Mark as target template.
>	* mkconfig.sh: Do not automatically define USED_FOR_TARGET in
>	tconfig.h.
>	* crtstuff.c: Do not include auto-host.h.
>	(IN_LIBGCC2): Do not define.
>	* gcov-io.h: Include tconfig.h, not auto-host.h.
>	* libgcc2.c: Do not include auto-host.h.
>	(abort): Do not undefine.
>	* libgcov.c: Remove unneeded comment about config.h.
>	* unwind-dw2-fde-glibc: Do not inlude auto-host.h.
>	* config.in, configure: Regenerated.

Breaks bootstrap on arm-netbsdelf2 and building any arm-elf style
cross.  The problem is the removal of IN_LIBGCC when compiling
crtstuff.c, but I can't see any explanation why you wanted to do that. 
On ARM that macro is needed to get a suitable static declaration of the
CTOR macros that can be used in an ASM statement.

R.